Between the sectors held by How Battery, 3/11, and Item Company, 3/1, were troops of five Marine units: Regulating Detachment, 1st Service Battalion; 1st Motor Transport Battalion; Marine Tactical Air Control Squadron 2 (MTACS-2); Division Headquarters Battalion; and H&S Company 3/1. The only other unit in this quarter was Weapons Company (-), 2/7, which held the road block on the route to Yudam-ni. At the conference it was decided that since Lieutenant Colonel Charles L. Banks’ Regulating Detachment had taken the lead in organizing the Supply Area on the north side of Hagaru, the arc of the perimeter east of the river and west of East Hill was to be made into a secondary defense zone. Banks thus became in effect a sub-sector commander. The only infantry troops in the Supply Area being detachments of 2/7 units, it was also agreed that tactical decisions concerning the zone should be discussed with the two ranking battalion officers--Lieutenant Colonel Lockwood, the commander, and Major Sawyer, the executive.[441] [441] “CO 2/7 and his headquarters were not given a specific mission because it was assumed that his uncanceled order from CO 7th Marines would require his further efforts in the relief of Fox Company.” Ridge Comments, 7 June 56. These matters having been settled, the conference broke up shortly after 1700 and the various commanders hastened back to their outfits to make last-minute preparations for the night’s attack. A strange hush had fallen over the perimeter, broken only by the occasional crackle of small-arms fire, and the damp air felt like snow. _CCF Attack from the Southwest_ How and Item Companies were ready. All platoon positions were well dug in, though the earth was frozen to a depth of six to ten inches. The men of Item Company used their heads as well as hands after Lieutenant Fisher managed to obtain a thousand sandbags and several bags of C3. This explosive was utilized in ration cans to make improvised shape charges which blasted a hole through the frozen crust of snow and earth. Then it became a simple matter to enlarge the hole and place the loose dirt in sandbags to form a parapet.[442] This ingenious system resulted in de luxe foxholes and mortar emplacements attaining to the dignity of field fortifications. [442] This section, unless otherwise noted, is based on: 3/1 tel to CO 1stMar, 2100 29 Nov 50; Ridge, _Notes_; Simmons interv, 1 Dec 55 and Comments; Fisher narrative; Corley narrative; Narrative of Capt R. L. Barrett, Jr., 9 Aug 55; Capt J. H. Miller ltr to authors, 10 Oct 55; and Sgt K. E. Davis ltr to authors, 20 Oct 55.